How to Use the filter() Method in JavaScript The filter method creates a new array and returns all of the items which pass the condition specified in the callback.
index: This is the index position of the currentItem inside the array.currentItem: This is the element in the array which is currently being iterated over.The callback function can take in the following parameters: The filter() method takes in a callback function and calls that function for every item it iterates over inside the target array. We all do this everyday, whether we're reading, choosing friends or our spouse, choosing what movie to watch, and so on. It entails filtering out one or more items (a subset) from a larger collection of items (a superset) based on some condition/preference. The way the filter() method works is very simple. The Array.filter() method is arguably the most important and widely used method for iterating over an array in JavaScript.
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